Clean up Mojo C API dependent targets

mojo/common/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 group("common") {
   public_deps = [
     ":common_base",
@@ skipping 21 matching lines @@
     "data_pipe_file_utils.cc",
     "data_pipe_utils.cc",
     "data_pipe_utils.h",
     "user_agent.cc",
     "user_agent.h",
   ]
 
   defines = [ "MOJO_COMMON_IMPLEMENTATION" ]
 
   public_deps = [
+    "//base",
+    "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/system",
   ]
 
   deps = [
-    "//base",
     "//base/third_party/dynamic_annotations",
-    "//mojo/public/c/system:for_component",
-    "//mojo/public/cpp/bindings",
   ]
 }
 
 # GYP version: mojo/mojo_base.gyp:mojo_url_type_converters
 source_set("url_type_converters") {
   sources = [
     "url_type_converters.cc",
     "url_type_converters.h",
   ]
 
+  public_deps = [
+    "//mojo/public/cpp/bindings",
+  ]
+
   deps = [
-    ":common_base",
     "//base",
     "//base/third_party/dynamic_annotations",
-    "//mojo/public/cpp/bindings",
     "//url",
   ]
 }
 
 # GYP version: mojo/mojo_base.gyp:mojo_test_common_custom_types
 mojom("test_common_custom_types") {
   sources = [
     "test_common_custom_types.mojom",
   ]
   public_deps = [
@@ skipping 26 matching lines @@
 
 test("mojo_common_perftests") {
   deps = [
     ":common",
     "//base",
     "//mojo/edk/test:run_all_perftests",
     "//mojo/public/cpp/test_support:test_utils",
     "//testing/gtest",
   ]
 }